"Say some madman comes in. The first person he would probably try to
take out was the resource officer. But if he doesn’t know which teacher
has training, then he wouldn’t know which one had [a gun],” Niceley said
by phone. “These guys are obviously cowards anyway and if someone
starts shooting back, they’re going to take cover, maybe go ahead and
commit suicide like most of them have.”

"Tennessee’s governor told reporters
Monday that he’s open to including it on the agenda for a January
conference to discuss school safety. Nicely said he expect the governor
“to be receptive” to his plan to use tax money to arm and train
teachers."

Worth noting too that any would-be shooters would not have to arrive with weapons to do harm - they could overpower armed teachers/guards. Do we provide AK-47s? Grenade Launchers? Should we hire Ninjas to hide out throughout a campus, ya know, just in case?

Making armed camps out of public schools or colleges is idiotic, short-sighted and deeply dangerous.